100% x 90

TIMI Score for STEMI Calculator

Calculate 30-day mortality risk in ST-elevation myocardial infarction patients

TIMI Risk Assessment

Age Group

Diabetes, Hypertension, or Angina

History of any of these conditions (+1 point)

Heart Rate >100 bpm

Tachycardia on presentation (+2 points)

Systolic BP <100 mmHg

Hypotension on presentation (+3 points)

Time to Treatment >4 hours

Delayed presentation (+1 point)

Weight <150 lbs (67 kg)

Low body weight (+1 point)

Killip Class II-IV

Heart failure signs (+2 points)

Anterior ST elevation or LBBB

Anterior wall MI or bundle branch block (+1 point)

TIMI Score Results

TIMI Score

0.8%

30-day Mortality Rate

Risk Category:Very Low Risk

Clinical Recommendation: Standard STEMI care with excellent prognosis

⚠️ Medical Disclaimer: This calculator is for educational purposes only. Clinical decisions should always be made by qualified healthcare professionals considering the complete clinical picture and patient context.

Risk Stratification Guide

Score 0-1:Low Risk (0.8-1.6%)

Score 2-3:Moderate Risk (2.2-4.4%)

Score 4-6:High Risk (7.3-16.1%)

Score ≥7:Very High Risk (≥23.4%)

100% x 250

Killip Classification

Class I

No clinical signs of heart failure

Mortality: 2-3%

Class II

Rales, S3 gallop, elevated JVP

Mortality: 5-12%

Class III

Acute pulmonary edema

Mortality: 10-20%

Class IV

Cardiogenic shock

Mortality: 50-80%

Clinical Application

•

Use for STEMI patients only, not for UA/NSTEMI

•

Calculate before primary PCI when possible

•

Higher scores may benefit from mechanical support

•

Consider ICU monitoring for scores ≥4

Understanding TIMI Score for STEMI

What is TIMI Score for STEMI?

The TIMI (Thrombolysis In Myocardial Infarction) Score for STEMI is a validated risk stratification tool used to predict 30-day mortality in patients with ST-elevation myocardial infarction. It was developed by Morrow et al. in 2000 and has been extensively validated across diverse patient populations.

Clinical Significance

•Identifies high-risk patients requiring intensive monitoring
•Guides treatment intensity and resource allocation
•Aids in prognosis communication with patients and families
•Helps determine need for advanced cardiac support

Scoring Components

Age (2-3 points)

65-74 years: +2 points
≥75 years: +3 points

Clinical Factors (1 point each)

Diabetes/HTN/Angina, Time >4hrs, Weight <150lbs, Anterior ST/LBBB

Hemodynamic Factors

HR >100 bpm: +2 points
SBP <100 mmHg: +3 points
Killip II-IV: +2 points

Important Clinical Notes

• This score is specifically for STEMI patients, not for unstable angina or NSTEMI
• The score predicts 30-day all-cause mortality, not just cardiac death
• Killip class is one of the strongest predictors in the model
• Consider mechanical circulatory support for very high-risk patients (score ≥8)
• Early revascularization remains the cornerstone of STEMI treatment regardless of score